Echinodorus bleheri is one of the most popular aquarium plants in the United States. Amazon sword plant, as it is usually recognized, is popular due to the fact that it can take a wide variety of conditions in the planted aquarium. Optimal conditions for Echinodorus bleheri would be medium lighting and a regular fertilizer routine. There is no need to use CO2 systems for your Amazon Sword Plant. Amazon sword plants are an excellent choice for beginners as midground or background plants in the aquarium and should last for quite some time.